Main Controller (MCF) Diagnostic Trouble Codes TM2361 (24JUN08) 9001-10-79 450DLC Excavator Operation and Tests 062608 PN=103 3 Continuity Check MCF and ECM Check for continuity between main controller (MCF) pin C4 and engine control module (ECM) pin 18. Check for continuity between main controller (MCF) pin C15 and engine control module (ECM) pin 37. Is there continuity between the connectors? YES: Go to Continuity Check MCF and Monitor Unit. NO: Open circuit in CAN between main controller (MCF) and engine control module (ECM). Repair or replace harness. See Cab Harness (W1) Wiring Diagram and see Machine Harness (W2) Wiring Diagram.
(Group 9015-10.) – – –1/1 9001 10 79 4 Continuity Check MCF and Monitor Unit Check for continuity between main controller (MCF) pin C4 and monitor controller pin B7. Check for continuity between main controller (MCF) pin C15 and monitor controller pin B6. Is there continuity between the connectors? YES: Go to MCF Short to Ground Check. NO: Open circuit in CAN between main controller (MCF) and monitor controller. Repair or replace harnesses. See Cab Harness (W1) Wiring Diagram and see Monitor Harness (W3) Wiring Diagram.
(Group 9015-10.) – – –1/1 5 MCF Short to Ground Check Disconnect all connectors to main controller (MCF), information controller (ICF), engine control module (ECM) and monitor controller. Check for continuity between main controller (MCF) pin C4 and main controller (MCF) pins A2, A13, B8, and B18. Check for continuity between MCF pin C15 an MCF pins A2, A13, B8, and B18. Is there continuity between the CAN circuit and ground circuit? YES: CAN circuit short to ground. Repair or replace harness. See Cab Harness (W1) Wiring Diagram. (Group 9015-10.) NO: Go to ECM Short to Ground Check. – – –1/1